feat(backup): 实现备份恢复进度实时显示功能

backend/middleware/auth.js

@@ -89,16 +89,24 @@ const verifyToken = (token) => {
 
 const authMiddleware = async (req, res, next) => {
   try {
-    const authHeader = req.headers.authorization;
+    let token = null;
     
-    if (!authHeader || !authHeader.startsWith('Bearer ')) {
+    const authHeader = req.headers.authorization;
+    if (authHeader && authHeader.startsWith('Bearer ')) {
+      token = authHeader.substring(7);
+    }
+    
+    if (!token && req.query.token) {
+      token = req.query.token;
+    }
+    
+    if (!token) {
       return res.status(401).json({
         success: false,
         message: '未提供认证令牌'
       });
     }
 
-    const token = authHeader.substring(7);
     const decoded = verifyToken(token);
 
     if (!decoded) {